Communication methods and devices

Abstract

This application provides a communication method. The method includes: a base station transmitting CSI reporting configuration information to a terminal device. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes N sub-configuration information, each of which corresponds to M CSI resources. Each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, and each sequence identifier includes one port sequence. M is an integer greater than or equal to 1, and N is an integer greater than 1. The base station transmits a reference signal to the terminal device for the M CSI resources. In this application, multiple sub-configuration information is added to the CSI reporting configuration information, so that the terminal device can measure CSI resources using multiple configurations and obtain CSI, thereby improving the flexibility of CSI reporting.

Description

Technical Field

[0001] This application claims priority to Chinese Patent Application No. 202311010308.X entitled "Communication Apparatus and Method", filed with the National Intellectual Property Administration of China on August 10, 2023, which is hereby incorporated by reference in its entirety.

[0002] The present application relates to the field of communications, and in particular to a communication method and apparatus.

Background Art

[0003] With the introduction of network energy saving (NES), there exist different configurations when a network device schedules a physical downlink shared channel (PDSCH). Under different configurations, the network device enables different antennas to reduce the power consumption of the network device. Before scheduling a PDSCH, the network device needs to obtain channel state information (CSI), which is usually acquired by a terminal device through channel measurement on a CSI resource. Currently, a terminal device measures and reports CSI on CSI resources using only a single configuration, which cannot meet network energy saving requirements.

[0004] Therefore, how to measure CSI using multiple configurations to improve the flexibility of CSI reporting is a problem worth discussing.

Summary of Invention

[0005] This application provides a communication method. Multiple sub-configuration information is added to CSI report configuration information, and as a result, the terminal device can measure CSI resources using multiple settings, acquire CSI, and improve the flexibility of CSI reporting.

[0006] According to a first embodiment, a communication method is provided. The method may be performed by a base station or by a chip or circuit used for a base station. This is not limited to the present application. For ease of explanation, an example in which the method is performed by a base station is used in the following description.

[0007] The method includes the base station transmitting channel status information CSI reporting configuration information to a terminal device. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes N sub-configuration information, each of which corresponds to M CSI resources. Each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, and each sequence identifier indicates one port sequence. M is an integer greater than or equal to 1, and N is an integer greater than 1. The base station transmits a reference signal to the terminal device for the M CSI resources.

[0008] In the embodiments of this application, the channel state information (CSI) reporting configuration information includes N sub-configuration information, each sub-configuration information including port indication information. The port indication information indicates at least one sequence identifier and at least one port sequence. Based on the sub-configuration information, a terminal device can receive a reference signal on a CSI resource and measure the corresponding antenna port based on the sequence identifier and port sequence indicated by the port indication information within the sub-configuration information. The terminal device can then report the CSI in different sub-configurations to a base station, improving the flexibility of CSI reporting.

[0009] With respect to the first embodiment, in some implementations of the first embodiment, the antenna port included in the port sequence is an antenna port that is enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device.

[0010] In this embodiment of the present application, it should be noted that the antenna port in the sub-configuration information and the antenna port enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device correspond to the same physical antenna. However, since the numbering rules for antenna ports may differ, the antenna port in the sub-configuration information may have a different number than the antenna port enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device.

[0011] For example, for the same physical antenna, the CSI-RS antenna port number in the sub-configuration information may be 3000+i, where 0≦i≦31, and the antenna port number for the physical downlink shared channel may be 1000+j, where 0≦j≦11. Both i and j are integers.

[0012] In this embodiment of the present application, sub-configuration information may be determined by the base station based on network energy-saving configuration information. Specifically, the network energy-saving configuration information indicates enabled and disabled CSI-RS antenna ports. For example, the network energy-saving configuration information includes a bitmap in which the bits in the bitmap have a one-to-one correspondence with CSI-RS antenna ports. In the bitmap, 1 represents enable and 0 represents disable. Enablement may be understood as performing a CSI measurement by using the CSI-RS antenna port and then transmitting a PDSCH by using the physical antenna corresponding to the CSI-RS antenna port. Assume that a CSI-RS port exists and the bitmap is 10001000, indicating that antenna ports corresponding to CSI-RS antenna port numbers 0 (i=0) and 4 (i=4) are enabled and the other antenna ports are disabled. The base station determines port indication information based on the network energy-saving configuration information. All antenna ports within a port sequence in the port instruction information are the same as the enabled antenna ports in the network energy saving configuration information.

[0013] In this embodiment of the present application, channel measurements can be performed on antenna ports in different configurations, and as a result, the base station can implement energy saving by using energy saving settings when transmitting a physical downlink shared channel.

[0014] With respect to the first embodiment, in some implementations of the first embodiment, the sub-configuration information includes at least one sequence identifier and at least one port sequence.

[0015] In this embodiment of the present application, the port sequence to be measured can be explicitly indicated, and the terminal device does not need to make any further decisions, thereby reducing the computational load on the terminal device and improving computational efficiency.

[0016] With respect to the first embodiment, in some implementations of the first embodiment, the sub-configuration information includes at least one antenna port.

[0017] In this embodiment of the present application, the port sequence to be measured may be implicitly indicated. Specifically, if no sequence identifier exists in the subconfiguration information, the terminal device sorts at least one antenna port in a default order and then determines a range of values ​​for the sequence identifier based on the number of antenna ports in the subconfiguration information. When the sequence identifier is n, the first n antenna ports among the antenna ports sorted in the default order are used as the port sequence corresponding to sequence identifier n. When the number of antenna ports in the subconfiguration information is m, and the antenna ports are in the default order: p0, p1, p2, ..., p m-1 Assume that the data is sorted as follows, and that the sequence identifiers range from 1 to m. In this case, If the sequence identifier is 1, the corresponding port sequence is {p0}, If the sequence identifier is 2, the corresponding port sequence is {p0, p1}. If the sequence identifier is 3, the corresponding port sequence is {p0, p1, p2}, and so on. If the sequence identifier is m, the corresponding port sequence is {p0, p1, p2, ..., p m-1 The default order may be specified by the protocol or pre-configured at the base station and terminal devices. This is not limited to the present application.

[0018] In this embodiment of the present application, the sequence identifier and port sequence are implicitly indicated in order to reduce signaling overhead.

[0019] In relation to the first embodiment, in some implementations of the first embodiment, the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

[0020] With respect to the first embodiment, in a partial implementation of the first embodiment, N sub-configuration information includes first sub-configuration information and second sub-configuration information, wherein the port sequence specified by the first sub-configuration information and the port sequence specified by the second sub-configuration information include at least one identical antenna port. The method further includes: a base station transmitting first information to a terminal device. The first information instructs the terminal device to measure the reference signal in a first time unit in the port sequence specified by the first sub-configuration information, and to measure the reference signal in a second time unit in the port sequence specified by the second sub-configuration information. The first time unit and the second time unit are different time units.

[0021] When antenna ports overlap in different subconfigurations, multiple precoding matrices exist for the overlapping antenna ports, and the base station cannot determine the precoding matrices for the overlapping antenna ports. This affects the base station's selection of antenna ports for transmitting the physical downlink shared channel. In this embodiment of the present application, the terminal device is instructed to distinguish subconfigurations by measuring the overlapping antenna ports in different time units. This means that the resources corresponding to subconfigurations with overlapping antenna ports are different, thereby enabling normal operation of the base station.

[0022] With respect to the first embodiment, in some implementations of the first embodiment, the time unit includes a slot.

[0023] According to a second embodiment, a communication method is provided. The method may be performed by a terminal device or by a chip or circuit used in a terminal device. This is not limited to the present application. For ease of explanation, an example in which the method is performed by a terminal device is used in the following description.

[0024] The method includes: a terminal device receiving channel status information CSI reporting configuration information from a base station. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes N sub-configuration information, each of which corresponds to M CSI resources. Each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, and each sequence identifier indicates one port sequence. M is an integer greater than or equal to 1, and N is an integer greater than 1. The terminal device receives a reference signal for the M CSI resources.

[0025] With respect to the second aspect, in some implementations of the second aspect, the sub-configuration information includes at least one sequence identifier and at least one port sequence.

[0026] With respect to the second aspect, in some implementations of the second aspect, the sub-configuration information includes at least one antenna port.

[0027] With respect to the second aspect, in some implementations of the second aspect, the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

[0028] With respect to the second aspect, in a partial implementation of the second aspect, N sub-configuration information includes first sub-configuration information and second sub-configuration information, wherein the port sequence specified by the first sub-configuration information and the port sequence specified by the second sub-configuration information include at least one identical antenna port.

[0029] The method further includes: the terminal device measuring a reference signal in a first time unit in a port sequence specified by a first sub-configuration information, and measuring the reference signal in a second time unit in a port sequence specified by a second sub-configuration information, wherein the first and second time units are different time units.

[0030] With respect to the second embodiment, in some implementations of the second embodiment, the time unit includes a slot.

[0031] For the beneficial effects of the second embodiment, please refer to the description of the first embodiment. Further details will not be provided here.

[0032] According to a third aspect, a communication method is provided. The method may be performed by a base station or by a chip or circuit used for a base station. This is not limited to the present application. For ease of explanation, an example in which the method is performed by a base station is used in the following description.

[0033] The method includes a base station transmitting channel status information CSI reporting configuration information to a terminal device. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes M port indication information and N sub-configuration information, where the port indication information is in a one-to-one correspondence with the CSI resources, and each of the sub-configuration information corresponds to one of the M CSI resources. The port indication information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port used for channel measurement, each sequence identifier indicates one port sequence, and the sub-configuration information indicates at least one second antenna port. M is an integer greater than or equal to 1, and N is an integer greater than 1. The base station transmits a reference signal to the terminal device in M ​​CSI resources by using at least one first port sequence. The first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port.

[0034] In this embodiment of the present application, it should be noted that when a base station transmits a reference signal to a terminal device using M CSI resources by using at least one first port sequence, it means that the antenna ports used by the base station to transmit the reference signal over M CSI resources include, but are not limited to, all antenna ports in at least one first port sequence. For example, a base station can transmit a reference signal over M CSI resources by using all antenna ports (i.e., P antenna ports).

[0035] In this embodiment of the present application, the base station provides port instruction information and sub-configuration information to a terminal device, and as a result, the terminal device can determine from the port instruction information which port sequences need to be measured based on different sub-configuration requirements and report the CSI in different sub-configurations to the base station at the granularity of the port sequence, thereby improving the flexibility of CSI reporting.

[0036] With respect to the third aspect, in some implementations of the third aspect, the second antenna port is an antenna port that is enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device.

[0037] In this embodiment of the present application, the base station has an energy-saving setting, and sub-setting information includes the base station's energy-saving setting information. The second antenna port indicated by the sub-setting information is an antenna port that is enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device. In this embodiment of the present application, channel measurements can be performed on the antenna port based on different energy-saving settings, and as a result, the base station can use the energy-saving settings to achieve energy savings when transmitting a physical downlink shared channel.

[0038] With respect to a third aspect, in some implementations of the third aspect, the port instruction information includes at least one sequence identifier and at least one port sequence.

[0039] In this embodiment of the present application, the port sequence to be measured can be explicitly indicated, and the terminal device does not need to make any further decisions, thereby reducing the computational load on the terminal device and improving computational efficiency.

[0040] With respect to the third aspect, in some implementations of the third aspect, the port designation information includes at least one antenna port.

[0041] In this embodiment of the present application, the sequence identifier and port sequence are implicitly indicated in order to reduce signaling overhead.

[0042] With respect to the third aspect, in some implementations of the third aspect, the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

[0043] With respect to a third aspect, in a partial implementation of the third aspect, T network energy saving configuration information includes a first sub-configuration information and a second sub-configuration information, wherein at least one second antenna port specified by the first sub-configuration information and at least one second antenna port specified by the second sub-configuration information include at least one identical antenna port.

[0044] The method further includes: the base station transmitting first information to a terminal device. The first information instructs the terminal device to measure the reference signal of at least one second antenna port indicated by first sub-configuration information in a first time unit, and to measure the reference signal of at least one second antenna port indicated by second sub-configuration information in a second time unit. The first time unit and the second time unit are not the same time unit.

[0045] In this embodiment of the present application, the terminal device is instructed to measure duplicate antenna ports in different time units and to distinguish between sub-configurations. This means that the resources corresponding to sub-configurations with duplicate antenna ports are different, thereby enabling the normal operation of the base station.

[0046] With respect to the third aspect, in some implementations of the third aspect, the time unit includes a slot.

[0047] According to a fourth aspect, a communication method is provided. The method may be performed by a terminal device or by a chip or circuit used in a terminal device. This is not limited to the present application. For ease of explanation, an example in which the method is performed by a terminal device is used in the following description.

[0048] The method includes a terminal device receiving channel status information CSI reporting configuration information from a base station. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes M port instruction information and N sub-configuration information, where the port instruction information is in a one-to-one correspondence with the CSI resources, and each of the sub-configuration information corresponds to one of the M CSI resources. The port instruction information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port used for channel measurement, each sequence identifier indicates one port sequence, and the sub-configuration information indicates at least one second antenna port. M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0049] The terminal device measures a reference signal in at least one first port sequence across M CSI resources. The first port sequence belongs to a port sequence specified by port indication information, and the antenna ports within the first port sequence are the second antenna ports.

[0050] In this embodiment of the present application, it should be noted that when a terminal device measures a reference signal in at least one first port sequence across M CSI resources, it means that the reference signal measured by the terminal device across M CSI resources includes, but is not limited to, the reference signals in all antenna ports in at least one first port sequence.

[0051] With respect to the fourth aspect, in some implementations of the fourth aspect, the second antenna port is an antenna port that is enabled by the base station when the base station transmits a physical downlink shared channel.

[0052] With respect to the fourth aspect, in some implementations of the fourth aspect, the port instruction information includes at least one sequence identifier and at least one port sequence.

[0053] With respect to a fourth aspect, in a partial implementation of the fourth aspect, port instruction information includes at least one port sequence and a first correspondence, the first correspondence being a correspondence between a sequence identifier and a port sequence.

[0054] With respect to the fourth aspect, in some implementations of the fourth aspect, the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

[0055] With respect to the fourth aspect, in a partial implementation of the fourth aspect, T network energy saving configuration information includes first sub-configuration information and second sub-configuration information, wherein at least one second antenna port specified by the first sub-configuration information and at least one second antenna port specified by the second sub-configuration information include at least one identical antenna port.

[0056] The method further includes: the terminal device measuring a reference signal received at at least one second antenna port indicated by the first sub-configuration information in a first time unit, and measuring a reference signal received at at least one second antenna port indicated by the second sub-configuration information in a second time unit. The first time unit and the second time unit are not the same time unit.

[0057] With respect to the fourth aspect, in some implementations of the fourth aspect, the time unit includes a slot.

[0058] For the beneficial effects of the fourth aspect, please refer to the description of the third aspect. Further details will not be provided here.

[0059] According to a fifth aspect, a communication device is provided, which includes: a processing unit configured to determine CSI reporting configuration information; and a transceiver configured to transmit the CSI reporting configuration information to a terminal device. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes N sub-configuration information, each of which corresponds to M CSI resources. Each sub-configuration information includes at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, and each sequence identifier includes at least one port sequence. M is an integer greater than or equal to 1, and N is an integer greater than 1. The transceiver unit is further configured to transmit a reference signal to a terminal device for the M CSI resources.

[0060] The transceiver unit is capable of performing reception and transmission processing in the first mode, and the processing unit is capable of performing processing other than reception and transmission in the first mode.

[0061] According to the sixth aspect, a communication device is provided, the communication device is configured to receive CSI reporting configuration information from a base station, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each of which corresponds to M CSI resources, each of which indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates at least one port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; a transceiver unit is configured to receive a reference signal for the M CSI resources; and a processing unit is configured to measure the reference signal and determine the CSI.

[0062] The transceiver unit is capable of performing receiving and transmitting processes in a second manner, and the processing unit is capable of performing processes other than receiving and transmitting in a second manner.

[0063] According to the seventh aspect, a communication device is provided, which includes: a processing unit configured to determine channel status information CSI reporting configuration information; and a transceiver configured to transmit the CSI reporting configuration information to a terminal device. The CSI reporting configuration information includes M port instruction information and N sub-configuration information, where the port instruction information is in a one-to-one correspondence with CSI resources, and each sub-configuration information corresponds to one of the M CSI resources. The port instruction information indicates at least one sequence identifier and at least one port sequence, each port sequence including at least one antenna port, each sequence identifier indicating one port sequence, the first antenna port being used for channel measurement. The network energy saving configuration information indicates at least one second antenna port, the second antenna port being an antenna port enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device. M is an integer greater than or equal to 1, and N is an integer greater than 1. The transceiver unit is further configured to transmit a reference signal to a terminal device using at least one first port sequence across M CSI resources. The first port sequence belongs to a port sequence indicated by port designation information, and the antenna ports within the first port sequence are second antenna ports.

[0064] The transceiver unit is capable of performing reception and transmission in a third mode, and the processing unit is capable of performing processing other than reception and transmission in a third mode.

[0065] According to the eighth aspect, a communication device is provided, which includes a transceiver unit configured to receive channel status information CSI reporting configuration information from a base station. The CSI reporting configuration information corresponds to M CSI resources, and includes M port instruction information and N sub-configuration information, where the port instruction information is in a one-to-one correspondence with the CSI resources, and each of the sub-configuration information corresponds to M CSI resources. The port instruction information indicates at least one sequence identifier and at least one port sequence, where each port sequence includes at least one antenna port, and each sequence identifier indicates one port sequence. The first antenna port is used for channel measurement. The network energy saving configuration information indicates at least one second antenna port, where the second antenna port is an antenna port enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device. M is an integer greater than or equal to 1, and N is an integer greater than 1. The processing unit is configured to measure a reference signal in at least one first port sequence in the M CSI resources. The first port sequence belongs to the port sequence indicated by the port instruction information, and the antenna port in the first port sequence is the second antenna port.

[0066] The transceiver unit is capable of performing reception and transmission in the fourth mode, and the processing unit is capable of performing processing other than reception and transmission in the fourth mode.

[0067] According to the ninth aspect, a communication device is provided, comprising a transceiver, a processor, and memory. The processor is configured to control the transceiver to receive and transmit signals. The memory is configured to store a computer program. The processor is configured to call a computer program from memory and execute the computer program so that the communication device can perform any one of the first to fourth aspects and any possible implementations thereof.

[0068] Optionally, there is one or more processors and one or more memory units.

[0069] Optionally, the memory may be integrated with the processor, or the memory and processor may be located separately.

[0070] Optionally, the communication device further includes a transmitter machine and a receiver machine.

[0071] According to the tenth aspect, a communication system is provided which includes a base station and a terminal device. The base station is configured to perform a method in any possible implementation of the first or third aspect, and the terminal device is configured to perform a method in any possible implementation of the second or fourth aspect.

[0072] According to the eleventh aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program or code. When the computer program or code is executed on the computer, the computer becomes capable of performing any one of the first to fourth aspects and any possible implementations thereof.

[0073] According to the twelfth aspect, a chip is provided which includes at least one processor. The at least one processor is coupled to memory. The memory is configured to store a computer program. The processor is configured to call a computer program from memory and execute the computer program so that a device on which the chip system is installed can perform a method according to any one of the first to fourth aspects and any possible implementations of the first to fourth aspects.

[0074] The chip may include input circuits or interfaces for sending information or data, and output circuits or interfaces for receiving information or data.

[0075] According to the thirteenth aspect, a computer program product is provided. The computer program product includes computer program code. When the computer program code is executed on a device, the device becomes capable of performing any one of the first to fourth aspects and any possible implementations of the first to fourth aspects. [Brief explanation of the drawing]

[0076] [Figure 1] Figure 1 is a diagram of the architecture of a communication system to which the embodiment of the present application is applied.

[0077] [Figure 2] Figure 2 is a flowchart of the communication method according to the embodiment of the present application.

[0078] [Figure 3] Figure 3 is a flowchart of another communication method according to an embodiment of the present application.

[0079] [Figure 4] Figure 4 shows how CSI is reported using a time-division method according to the embodiment of this application.

[0080] [Figure 5] Figure 5 is a block diagram of the communication device 1000 according to the embodiment of the present application.

[0081] [Figure 6] Figure 6 is a block diagram of the communication device 2000 according to the embodiment of the present application.

[0082] [Figure 7] Figure 7 is a block diagram of the chip system 3000 according to an embodiment of the present application. [Modes for carrying out the invention]

[0083] The technical solution of this application will be explained below with reference to the attached drawings.

[0084] Figure 1 is a diagram of the architecture of a communication system to which an embodiment of the present application applies. As shown in Figure 1, the communication system includes a wireless access network 110 and a core network 120. Optionally, the communication system 100 may further include an internet 130. The wireless access network 110 may include at least one wireless access network device (e.g., 111a and 111b in the figure) and may further include at least one terminal device (e.g., 112a to 112j in the figure). The terminal device is connected to the wireless access network device wirelessly, and the wireless access network device is connected to the core network wirelessly or wired. The core network device and the wireless access network device may be separate physical devices, or the functions of the core network device and the logical functions of the wireless access network device may be integrated into the same physical device, or some functions of the core network device and some functions of the wireless access network device may be integrated into a single physical device. Wired or wireless connections may be used for connections between terminals and between wireless access network devices. Figure 1 is for illustrative purposes only. The communication system may further include other network devices, such as wireless relay devices and wireless backhaul devices not shown in the figure.

[0085] A wireless access network device is an access device used by a terminal device to access a communication system wirelessly. A wireless access network device may be a base station, an evolved node B (eNodeB), a transmission reception point (TRP), a next-generation node B (gNB) in a 5th generation (5G) mobile communication system, a next-generation base station in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a Wi-Fi system; or it may be a module or unit that completes part of the functions of a base station, for example, a central unit (CU) or a distributed unit (DU). Here, the CU can complete the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can further complete the functions of the service data adaptation protocol (SDAP). The DU can complete the functions of the base station's radio link control layer and medium access control (MAC) layer, and may further complete some or all of the functions of the physical layer. For a specific description of the protocol layer mentioned above, please refer to the technical specifications related to the 3rd generation partnership project (3GPP). The radio access network device may be a macro base station (e.g., 111a in the figure), a micro base station or indoor station (e.g., 111b in the figure), a relay node, a donor node, etc. The specific technologies and device configurations used by the radio access network device are not limited to the embodiments of this application.To facilitate the explanation, the following explanation will use an example where the wireless access network device is a base station.

[0086] A terminal device is a device with wireless transceiver functionality that can transmit signals to or receive signals from a base station. Terminal devices are also sometimes called terminals, user equipment (UE), mobile stations, or mobile terminals. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-type communication (MTC), the Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, and smart cities. Terminals may be mobile phones, tablet computers, computers with wireless transceiver functionality, wearable devices, vehicles, unmanned aerial vehicles, helicopters, airplanes, ships, robots, robotic arms, smart home devices, or similar devices. The specific technologies and device configurations used by the terminal devices are not limited to the embodiments of this application.

[0087] Base stations and terminal devices may be fixed or mobile. Base stations and terminal devices may be located on land, and the location may include indoors or outdoors, or be handheld or vehicle-mounted; they may be located on water; or they may be located on an airplane, balloon, or satellite. The application scenarios for base stations and terminal devices are not limited to the embodiments of this application.

[0088] The roles of base stations and terminal devices may be relative. For example, the helicopter or unmanned aerial vehicle 112i in the figure may be configured as a mobile base station. For a terminal device 112j that accesses the radio access network 110 via 112i, the terminal device 112i is a base station. However, for base station 111a, 112i is a terminal device, meaning that communication between 111a and 112i is performed based on the radio air interface protocol. It is clear that communication between 111a and 112i may alternatively be performed based on the interface protocol between base stations. In this case, for 111a, 112i is also a base station. Therefore, both base stations and terminal devices can be collectively called communication devices, and 111a and 111b in the figure may be called communication devices with base station functionality, while 112a through 112j in the figure may be called communication devices with terminal functionality.

[0089] Communication between base stations and terminal devices, between base stations, and between terminal devices may be conducted over licensed spectrum, unlicensed spectrum, or both licensed and unlicensed spectrum, which may be conducted over spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or both below 6 GHz and above 6 GHz. The spectrum resources used for wireless communication are not limited to the embodiments of this application.

[0090] In the embodiments of this application, the base station functions may be performed by a module (e.g., a chip) within the base station, or by a control subsystem that includes base station functions. The control subsystem that includes base station functions in this application may be a control center in the aforementioned application scenarios such as smart grids, industrial control, smart transportation, and smart cities. Alternatively, terminal device functions may be performed by a module (e.g., a chip or modem) within a terminal device, or by a device having terminal functions.

[0091] To facilitate understanding of the embodiments of this application, the terminology used in these embodiments will be briefly explained below.

[0092] 1. Channel Status Information Report (CSI report)

[0093] A channel status report is sometimes abbreviated as a CSI report. In a wireless communication system, a CSI is information reported by the receiving end (e.g., a terminal device) to the transmitting end (e.g., a network device) and used to describe the channel attributes of a communication link. A CSI may include, for example, a precoding matrix indicator (PMI), rank indication (RI), channel quality indicator (CQI), channel state information reference signal (CSI-RS), CSI-RS resource indicator (CRI), and layer indicator (LI), among others. It should be understood that the specific contents of a CSI listed above are merely illustrative examples and do not constitute any limitation to this application. A CSI may include one or more of the contents listed above, or other information different from those listed above that is used to represent a CSI. This is not limited to this application.

[0094] An example is used in which a terminal device reports CSIs to a network device. A terminal device may report one or more CSIs in a single time unit (e.g., a slot), and each CSI may correspond to one CSI reporting configuration condition. The CSI reporting configuration condition may be determined, for example, by using higher-layer signaling (e.g., CSI-report config in information element (IE) radio resource control (RRC) messages). The CSI reporting configuration may indicate the time domain behavior of the CSI report, the bandwidth, the report quantity, and similar formats. Time domain behavior includes, for example, periodic, semi-persistent, and aperiodic time domain behavior. A terminal device can generate one CSI based on one CSI reporting configuration.

[0095] A base station can configure terminal devices to report PMI. For example, a base station can configure a CSI report to require the terminal device to report CRI, RI, PMI, and CQI, i.e., configure CRI-RI-PMI-CQI in the CSI report. The base station transmits an unprecoded CSI-RS, and the terminal device measures the CSI-RS to obtain the RI, PMI, and CQI, and then reports them to the base station. Since the CSI-RS resource set associated with a CSI report may contain multiple CSI-RSs, the function of the CRI is to indicate a specific CSI-RS based on the fact that the terminal device obtained the reported CSI through measurement. When the base station receives the CSI reported by the terminal device and then schedules a PDSCH, the base station selects the appropriate PMI and CQI for scheduling based on the CRI, RI, PMI, and CQI reported by the terminal device.

[0096] Alternatively, the base station may configure the terminal device not to report PMI, for example, configure cri-RI-CQI in a CSI report. The base station transmits precoded CSI-RS. Specifically, the base station acquires an uplink channel H by using an uplink SRS UL and then acquires a downlink channel HDL based on reciprocity between the uplink and downlink channels, to acquire a downlink precoding matrix W. Then, the base station applies the downlink precoding matrix to the CSI-RS, and then the base station transmits the CSI-RS. The terminal device can acquire RI and CQI by measuring the CSI-RS, and then report CRI, RI, and CQI to the base station. When scheduling PDSCH, the base station selects appropriate PMI and CQI for scheduling based on the CRI, RI, and CQI reported by the terminal device.

[0097] When configuring cri-RI-CQI, the base station may further specify a port used for measurement by using non-PMI-PortIndication. The non-PMI-PortIndication specifically specifies a port sequence. For example, the sequence is as follows:

Mat

[0098] p0 (v) ,p1 (v) ,...,p v-1 (v) are CSI-RS ports associated with rank v. For example, the CSI-RS port p0 associated with rank v=1 (1) is 0; the CSI-RS ports p0 (2) and p1 (2)are 0 and 1; CSI-RS port p0 associated with rank v=3 (2) ,p1 (2) , and p2 (2) This can be 0, 3, or 4. The terminal device can select only one rank value from the ranks for reporting. When the UE obtains rank v=2 through measurement, the UE uses the CSI-RS port p0 (2) and p1 (2) By using this, you can obtain CQI. P is the number of CSI-RS antenna ports, and P = {1, 2, 4, 8}.

[0099] Non-PMI-PortIndication is configured per resource, meaning that the port sequence configured for different CSI-RS resources may be different. If no configuration is performed, the CSI-RS port p0 associated with rank v will be... (v) ,p1 (v) ,...,p v-1 (v) By default, the values ​​are {0,1,...,v-1}, and v={1,2,...,P}.

[0100] 2. Network Energy Saving (NES)

[0101] An antenna port is a logical antenna port, not an actual physical antenna. Within the same antenna port, the channel in one symbol may be inferred based on the channel in another symbol. The antenna port number for CSI-RS may be 3000+i, where 0≦i≦31. For CSI-RS, the antenna port number may alternatively be simply represented by i. The antenna port number for the demodulation reference signal (DMRS) of a PDSCH may be 1000+j, where 0≦j≦11, and both i and j are integers. For PDSCH, the antenna port number of a PDSCH may alternatively be simply represented by j.

[0102] There are two types of energy-saving techniques related to the spatial domain (SD) in network energy saving systems (NES). One type of technique is to completely disable antenna ports to save energy. This mode is sometimes called Type 1 SD adaptation. For example, if antenna port 0 performs transmission through X physical antennas, Type 1 SD may be understood as, when antenna port 0 is disabled, all X physical antennas corresponding to antenna port 0 are powered down, and accordingly, antenna port 0 is also disabled, where X is a positive integer. In Type 1 SD adaptation, the antenna port that is disabled may be the antenna port of a PDSCH.

[0103] Another type of technique involves powering down a portion of the physical antenna corresponding to an antenna port to conserve energy. This mode is sometimes called Type 2 SD adaptation. For example, if half of the physical antenna corresponding to antenna port 0 is powered down while the other half of the physical antenna is not, the signal at antenna port 0 can still be transmitted, but only half of the antenna is used for transmission.

[0104] It should be noted that all of the terms or technologies mentioned above belong to and are not limited to prior art.

[0105] To facilitate understanding of the embodiments described in this application, the following explanation is provided.

[0106] Firstly, in this application, unless otherwise specified or unless there is a logical inconsistency, the terminology and / or descriptions in the various embodiments are consistent and may be referenced to one another, and the technical features in the various embodiments may be combined based on their internal logical relationships to form new embodiments.

[0107] Secondly, in this application, “at least one” means one or more, and “multiple” means two or more. “And / or” describes the relationship of association between related objects, indicating that three relationships may exist. For example, A and / or B may indicate the following cases: A only exists, both A and B exist, and B only exists, where A and B may be singular or plural. In the subject description of this application, the letter “ / ” usually represents an “or” relationship between related objects. “At least one of the following items (parts)” or similar expressions indicate any combination of these items, including a single item (part) or any combination of multiple items (parts). For example, at least one of a, b, and c may indicate a, b, c, a and b, a and c, b and c, or a, b, and c. Each of a, b, and c may be in a single or plural form.

[0108] Thirdly, the terms “first,” “second,” and various numbers in this application indicate distinctions for the sake of clarity and are not used to limit the scope of the embodiments of this application, for example, intended to distinguish different messages but not to state a particular order or sequence. It should be understood that the subjects described in this manner are interchangeable in appropriate circumstances so as to describe solutions other than the embodiments of this application.

[0109] Fourth, the terms “include,” “have,” and any variations thereof in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those explicitly enumerated steps or units, and may include other steps or units that are not explicitly enumerated or are specific to the process, method, product, or device.

[0110] Fifth, the term "indicate" in this application may include both direct and indirect indications. When some instructional information indicates A, the instructional information may directly indicate A or indirectly indicate A, and does not mean that the instructional information is unquestionably carrying A.

[0111] Sixth, “protocol” in this application could be a standard protocol in the field of communications, and could include, for example, 5G protocols, new radio (NR) protocols, and related protocols applicable to future communications systems. This is not limited to this application. “Predefined” could include prior definitions, for example, definitions in protocols. “Pre-configured” may be implemented by pre-storing corresponding codes or corresponding tables in a device, or by other means that may indicate relevant information. Specific implementations are not limited to this application.

[0112] Seventh, "communication" in this application may be described as "data transmission," "information transmission," "data processing," etc. "Transmission" includes both "sending" and "receiving."

[0113] The communication method provided in the embodiments of this application will be described in detail below with reference to the attached drawings. The embodiments provided in this application are applicable to any communication scenario in which a transmitting device communicates with a receiving device, and are applicable, for example, to the communication system shown in Figure 1.

[0114] Figure 2 is a flowchart of the communication method 200 according to the embodiment of the present application.

[0115] S210: The base station transmits CSI reporting configuration information to the terminal device. The CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to M CSI resources. Each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, and each sequence identifier indicates one port sequence. M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0116] Base stations can transmit CSI reporting configuration information to terminal devices by using radio resource control (RRC) signaling.

[0117] In this application, the sequence identifier may include a rank, and the number of antenna ports included in the port sequence corresponding to the rank is equal to the rank value.

[0118] In the embodiments of this application, the sub-configuration information may explicitly or implicitly indicate at least one sequence identifier and at least one port sequence.

[0119] In possible implementations, subconfiguration information explicitly indicates at least one sequence identifier and at least one port sequence, and subconfiguration information includes at least one sequence identifier and at least one port sequence. The port sequence that needs to be measured is explicitly indicated, and the terminal device does not need to make any further decisions, which saves the terminal device's computing resources and improves the terminal device's computing efficiency.

[0120] In possible implementations, subconfiguration information implicitly indicates at least one sequence identifier and at least one port sequence, and subconfiguration information includes at least one antenna port. Specifically, the number of antenna ports in the subconfiguration information is m, and the antenna ports are in the default order: p0, p1, p2, ..., p m-1 Assume they are sorted as follows. In this case, the sequence identifiers are 1 to m, and sequence identifier v corresponds to the first v antenna ports. Specifically: If the sequence identifier is 1, the corresponding port sequence is {p0}; If the sequence identifier is 2, the corresponding port sequence is {p0, p1}; If the sequence identifier is 3, the corresponding port sequence is {p0, p1, p2}; and so on. If the sequence identifier is m, the corresponding port sequence is {p0, p1, p2, ..., p m-1 The default order, for example, ascending or descending, may be specified in the protocol or pre-configured in the base station and terminal devices. This is not limited to the present application.

[0121] In particular, the antenna ports to be enabled, as indicated by the network energy saving settings information, are sorted as p0, p1, p2, ..., p m-1The list may be sorted in a default order to obtain the following, where m is the number of enabled antenna ports. The enabled antenna ports indicated by the network energy saving configuration information may be understood as CSI-RS antenna ports used for CSI measurements, or antenna ports enabled when a base station transmits a PDSCH, because antenna ports correspond to the same physical antenna. For example, the network energy saving configuration information includes a bitmap, where 1 in the bitmap represents enable and 0 in the bitmap represents disable. Assume that CSI-RS ports exist, the bitmap is 10001000, and CSI-RS antenna ports corresponding to antenna port numbers 0 and 4 are enabled. In this case, m=2. After the antenna ports are sorted in ascending order of antenna port number, p0=0 and p1=4. If the sequence identifier is 1, the corresponding port sequence is {0}, or if the sequence identifier is 2, the corresponding port sequence is {0,4}. The sequence identifier may also be a rank. If the rank is 1, the terminal device performs a CSI measurement using port 0 to obtain a CQI. If the rank is 2, the terminal device performs a CSI measurement using ports 0 and 4 to obtain a CQI.

[0122] For example, possible cases for CSI Report configuration information are as follows: The CSI Report configuration information indicates that the terminal device does not report PMI (i.e., cri-RI-CQI). The CSI Report configuration information is configured to correspond to two CSI resources (CSI-RS Resource 0 and CSI-RS Resource 1) and two sub-configuration information (Sub-configuration A and Sub-configuration B). It is configured that there are eight antenna ports for each of the two CSI-RS resources, and the CSI Report configuration information indicates at least one sequence identifier and at least one port sequence by using port index information (PortIndexFor8Ranks). CSI-Report#1 (cri-RI-CQI) The CSI-RS resource includes two resources: CSI-RS Resource 0 and 1 CSI-RS Resource 0 (8 ports) CSI-RS Resource 1 (8 ports) Sub-setting A Ports 0-3 (turn on), Ports 4-7 (turn off) PortIndexFor8Ranks, which is set for CSI-RS resource 0, is set, for example, as follows: p0 (1) ,p0 (2) ,p1 (2) ,p0 (3) ,p1 (3) ,p2 (3) ={0,0,3,0,1,3} PortIndexFor8Ranks, which is set for CSI-RS resource 1, is set as follows, for example: p0 (1) ,p0 (2) ,p1 (2) ,p0 (3) ,p1 (3) ,p2 (3) ,p0 (4) ,p1 (4) ,p2 (4) ,p3 (4) ={1,1,3,0,1,2,0,1,2,3} Sub-setting B Ports 0-3 (turn off), Ports 4-7 (turn on) PortIndexFor8Ranks, which is set to B for CSI-RS resource 0, is set, for example, as follows: p0 (1) ,p0 (2) ,p1={4,4,6} PortIndexFor8Ranks, which is set to B for CSI-RS resource 1, is set as follows, for example: p0 (1) ,p0 (2),p1 (2) ,p0 (3) p1 (3) ,p2 (3) ={5,4,5,5,6,7}

[0123] In the example above, the port index information (PortIndexFor8Ranks) in the CSI reporting configuration information is determined by the base station based on the network energy saving configuration information. It is also possible to understand that the network energy saving configuration information is determined based on the port index information, or that the network energy saving configuration information and the port index information are determined together. This is not limited to the present case. Specifically, the network energy saving configuration information indicates the antenna ports that are enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device. For example, the network energy saving configuration information includes a bitmap, where 1 represents enable and 0 represents disable. Assume the base station has eight ports and the bitmap is 10001000. The bitmap indicates that when the base station transmits a physical downlink shared channel to a terminal device, the CSI-RS antenna ports corresponding to antenna port numbers 0 and 4 are enabled, and the other antenna ports are disabled. The base station determines the port index information based on the network energy saving configuration information. All antenna ports in the port sequence within the port instruction information are antenna ports that are enabled in the network energy saving configuration information.

[0124] For example, sub-configuration information can include port index information. Port index information (PortIndexFor8Ranks) indicates at least one sequence identifier and at least one port sequence. Specifically, one sub-configuration information may contain M port index information, and M port index information has a one-to-one correspondence with M CSI-RS resources.

[0125] In possible implementations, sub-configuration information may further include network energy saving configuration information, which indicates at least one antenna port that is enabled when the base station transmits PDSCH to a terminal device.

[0126] In the example above, the CSI reporting configuration information includes network energy saving configuration information. However, since the network energy saving configuration information is applied to the base station and the port instruction information in this embodiment is determined based on the network energy saving configuration information, the CSI reporting configuration information does not need to include the network energy saving configuration information in order to reduce signaling overhead.

[0127] S220: The base station transmits a reference signal to the terminal device for M CSI resources, that is, it transmits a channel state information reference signal (CSI-RS) used for CSI measurement to the terminal device for M CSI resources.

[0128] It should be noted that CSI-RS resources are sometimes referred to as channel measurement pilots.

[0129] The transmitted CSI-RS includes three types of CSI-RS: periodic CSI-RS, semi-persistent CSI-RS, and aperiodic CSI-RS.

[0130] Semi-persistent CSI-RS can be activated using a MAC CE (Media Access Control control element), after which CSI-RS is transmitted periodically. Aperiodic CSI-RS may be activated using DCI, after which CSI-RS is transmitted.

[0131] S230: The terminal device measures the reference signal from the base station based on the CSI reporting configuration information and determines the channel status information CSI.

[0132] Specifically, the terminal device measures the corresponding antenna port and obtains the corresponding CSI based on the port sequence specified in the CSI reporting configuration information.

[0133] In this embodiment of the present application, the CSI includes the CRI, RI, and CQI. Based on each sub-configuration, the UE can obtain the corresponding CSI through measurement. Alternatively, the UE may perform measurements and obtain the corresponding CSI only based on the sub-configurations specified by the base station, for which reporting is required. The instruction information includes the DCI or MAC CE.

[0134] S240: The terminal device reports the CSI to the base station.

[0135] There are three types of CSI reports: periodic reports, semi-persistent reports, and aperiodic reports.

[0136] If CSI is reported periodically, the terminal device performs the reporting via the physical uplink control channel PUCCH.

[0137] If a CSI is reported semi-persistently via PUCCH, the terminal device requires further activation by using MAC-CE messages to report the CSI.

[0138] If a CSI is reported semi-persistently via PUSCH, the terminal device requires further activation by using DCI to report the CSI.

[0139] If CSIs are reported aperiodically, the terminal device will need to be further activated by using DCI to report CSIs.

[0140] It should be noted that in the embodiments of this application, activating a CSI report may be referred to as triggering a CSI report. This term is not particularly limited to the embodiments of this application, insofar as the meaning expressed is the same.

[0141] It should be noted that the three types of CSI-RS resources and the three types of CSI reports in the protocol may not be combined randomly. The combinations of CSI-RS resource types and CSI report types are shown in Table 1. Table 1 [Table 1]

[0142] S250: The base station transmits the PDSCH to the terminal device based on the CSI from the terminal device.

[0143] In the embodiments of this application, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information including port indication information. The port indication information indicates at least one sequence identifier and at least one port sequence. A terminal device can receive a reference signal based on the sub-configuration information with respect to the CSI resources in the configuration and measure the corresponding antenna port based on the sequence identifier and port sequence indicated by the port indication information in the sub-configuration information. The terminal device can then report CSIs in different sub-configurations to the base station at the granularity of the port sequence, thereby improving the flexibility of CSI reporting. In addition, in this embodiment of this application, the antenna port in the sub-configuration information and the antenna port enabled by the base station when the base station transmits a physical downlink shared channel to the terminal device correspond to the same physical antenna. However, since the numbering rules for antenna ports may differ, the antenna port in the sub-configuration information may have a different number than the antenna port enabled by the base station when the base station transmits a physical downlink shared channel to the terminal device.

[0144] In the example above, the port sequence in the CSI reporting configuration information received by the terminal device is determined after the base station has considered the network energy saving configuration information, and the terminal device does not need to make any additional decisions. However, the signaling overhead in this case is significant.

[0145] Figure 3 is a flowchart of another communication method 300 according to an embodiment of the present application.

[0146] S310: The base station transmits CSI configuration information to the terminal device. The CSI reporting configuration information corresponds to M CSI resources and includes M port instruction information and N sub-configuration information. The port instruction information corresponds one-to-one with the CSI resources, and each sub-configuration information corresponds to M CSI resources. The port instruction information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port used for channel measurement, each sequence identifier indicates one port sequence, and the sub-configuration information indicates at least one second antenna port. M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0147] Base stations can transmit CSI reporting configuration information to terminal devices by using RRC signaling.

[0148] In this application, the sequence identifier may include a rank, and the number of antenna ports included in the port sequence corresponding to the rank is equal to the rank value.

[0149] In the embodiments of this application, the port designation information may explicitly or implicitly indicate at least one sequence identifier and at least one port sequence.

[0150] In possible implementations, port instruction information explicitly indicates at least one sequence identifier and at least one port sequence, and port instruction information includes at least one sequence identifier and at least one port sequence.

[0151] In possible implementations, port indication information implicitly indicates at least one sequence identifier and at least one port sequence, and the port indication information includes at least one first antenna port. Specifically, the number of first antenna ports in the port indication information is m, and the antenna ports are in the default order: p0, p1, p2, ..., pm-1 Assume that they are sorted as follows. In this case, the sequence identifiers are 1 to m, and the sequence identifier v corresponds to the first v antenna ports. If the sequence identifier is 1, the corresponding port sequence is {p0}; If the sequence identifier is 2, the corresponding port sequence is {p0, p1}; and so on. If the sequence identifier is m, the corresponding port sequence is {p0, p1, p2, ..., p m-1 The default order, for example, ascending or descending, may be specified in the protocol or pre-configured in the base station and terminal devices. This is not limited to the present application. For example, the number of CSI-RS antenna ports is 4. That is, P=4=m. The CSI-RS antenna ports are sorted in ascending order. In this case, p0, p1, p2, and p3 are 0, 1, 2, and 3, respectively. CSI-RS port p0 associated with sequence identifier v (v) ,p1 (v) ,...,p v-1 (v) By default, is {0,1,...,v-1}, where v={1,2,...,4}. In this case, When the sequence identifier is 1, the corresponding port sequence is {0}; When the sequence identifier is 2, the corresponding port sequence is {0,1}; When the sequence identifier is 3, the corresponding port sequence is {0,1,2}; or When the sequence identifier is 4, the corresponding port sequence is {0,1,2,3}.

[0152] In possible implementations, sub-configuration information includes energy-saving configuration information, and the second antenna port indicated in the sub-configuration information is an antenna port that is enabled by the base station when the base station transmits PDSCH to the terminal device.

[0153] For example, possible cases for CSI Report configuration information are as follows: The CSI report configuration information indicates that the terminal device does not report PMI (i.e., cri-RI-CQI). The CSI report configuration information is configured to correspond to two CSI resources (CSI-RS resource 0 and CSI-RS resource 1) and two sub-configuration information (sub-configuration A and sub-configuration B). There are eight antenna ports for the CSI-RS resource, and the CSI report configuration information indicates at least one sequence identifier and at least one port sequence by using port index information (PortIndexFor8Ranks). CSI-Report#1 (cri-RI-CQI) The CSI-RS resource set includes two resources: CSI-RS Resource 0 and 1 CSI-RS Resource 0 (8 ports) PortIndexFor8Ranks Rank v=4 is four ports p0 (4) ,p1 (4) ,p2 (4) ,p3 (4) This shows that the result is {4, 5, 6, 7}. Rank v=3 is the three port p0 (3) ,p1 (3) ,p2 (3) This indicates that {4,5,6}. Rank v=2 is two ports p0 (2) ,p1 (2) This indicates that {1,2}. Rank v=1 means one port p0 (4) This indicates that {1}. CSI-RS Resource (8 ports) PortIndexFor8Ranks Rank v=3 is the three port p0 (3) ,p1 (3) ,p2 (3) This indicates that {4,5,7}. Rank v=2 is two ports p0 (2) ,p1 (2) This indicates that it is {0,1}. Rank v=1 means one port p0 (1) This indicates that {0}. Sub-setting A Ports 0-3 (turn on), Ports 4-7 (turn off) Sub-setting B Ports 0-3 (turn off), Ports 4-7 (turn on)

[0154] S320: The base station transmits a reference signal or CSI-RS resource to the terminal device using M CSI resources. See the description in S220 for details. Further details are not provided here.

[0155] Optionally, in S330, the terminal device determines at least one first port sequence, the first port sequence belongs to a port sequence indicated by port instruction information, and the antenna port in the first port sequence is the second antenna port.

[0156] In this embodiment of the present application, the base station performs processing without using port instruction information. In this case, some antenna ports in certain port sequences within the port instruction information may not belong to the antenna ports enabled in the sub-configuration information. As a result, the port instruction information conflicts with the sub-configuration information. Therefore, the base station cannot perform port configuration using the sub-configuration information. To solve this problem, the terminal device determines at least one first port sequence based on the port instruction information and the sub-configuration information, where the first port sequence belongs to the port sequence indicated by the port instruction information, and the antenna ports in the first port sequence are the second antenna ports. CSI-Report#1 (cri-RI-CQI) in S310 is used as an example. With respect to CSI-RS resource 0, based on Sub-configuration A, the first port sequence includes: Rank v=1 means one port p0 (4) This indicates that {1}; Rank v=2 is two ports p0 (2) ,p1 (2) This indicates that {1,2}. With respect to CSI-RS resource 0, based on sub-configuration information B, the first port sequence includes: Rank v=3 is the three port p0 (3) ,p1 (3) ,p2 (3) This shows that {4,5,6}; Rank v=4 is four ports p0 (4) ,p1 (4) ,p2 (4) ,p3 (4) This shows that the result is {4, 5, 6, 7}. With respect to CSI-RS resource 1, based on sub-configuration information A, the first port sequence includes: Rank v=1 means one port p0 (1) This indicates that {0}; Rank v=2 is two ports p0 (2) ,p1 (2) This indicates that it is {0,1}. With respect to CSI-RS resource 1, based on sub-configuration information B, the first port sequence includes: Rank v=3 is the three port p0 (3) ,p1 (3) ,p2 (3) This indicates that {4,5,7}. In sub-configuration A, if CRI indicates resource 0 or 1, the rank reported by UE may be 1 or 2, and 1 bit is required for indication, i.e., RI is 1 bit. In sub-configuration B, if CRI indicates resource 0, the rank reported by the UE could be 3 or 4, requiring 1 bit for indication, i.e., RI is 1 bit; or, if CRI indicates resource 1, the rank reported by the UE can only be 3, requiring no bits for indication, i.e., RI is 0 bits. In order for the base station to know the number of bits in the RI regardless of the content of the CRI, a larger number of bits, i.e., 1 bit, must be selected for the number of bits in the RI. In other words, for a particular sub-configuration, the number of bits in the RI is the maximum of the number of bits in the RI that corresponds to all CSI-RS resources.

[0157] S340: The terminal device measures the reference signal from the base station. Specifically, the terminal device obtains the CSI by measuring the reference signal received by the antenna port in at least one first port sequence. See the description in S230 for details. Details are not explained again here.

[0158] S350: The terminal device reports the CSI to the base station. See the explanation in S240 for details. Further details are not provided here.

[0159] S360: The base station transmits the PDSCH to the terminal device based on the CSI from the terminal device.

[0160] In this embodiment of the present application, the base station provides port instruction information and sub-configuration information to a terminal device, thereby enabling the terminal device to determine from the port instruction information which port sequences need to be measured based on different sub-configuration requirements, and to report CSIs in different sub-configurations to the base station at the granularity of the port sequences, thereby improving the flexibility of CSI reporting. Furthermore, in this embodiment of the present application, the base station has energy saving settings, and the sub-configuration information includes energy saving setting information. The second antenna port indicated by the sub-configuration information is an antenna port that is enabled by the base station when the base station transmits a physical downlink shared channel to a terminal device. In this embodiment of the present application, it is possible to perform channel measurements at the antenna port based on different energy saving settings, thereby enabling the base station to implement energy saving by using the energy saving settings when transmitting a physical downlink shared channel.

[0161] In the embodiments shown in Figures 2 and 3, for one CSI resource setting, there are multiple sub-settings, each corresponding to one network energy saving setting, i.e., one energy saving setting for a base station. Antenna ports indicated by network energy saving settings corresponding to different sub-settings may overlap.

[0162] For example, Sub-configuration A indicates that antenna ports 0 through 7 will be enabled; Sub-configuration B indicates that antenna ports 0 through 3 will be enabled and antenna ports 4 through 7 will be disabled; and Sub-configuration C indicates that antenna ports 4 through 7 will be enabled and antenna ports 0 through 3 will be disabled. In sub-configuration A, the antenna ports enabled overlap with the antenna ports enabled in sub-configuration B, and in sub-configuration A, the antenna ports enabled overlap with the antenna ports enabled in sub-configuration C. When the base station transmits CSI-RS through precoding, overlapping antenna ports have multiple precoding matrices, and the base station cannot make a selection. As a result, it is unable to transmit CSI-RS successfully. In possible solutions, for semi-persistent or aperiodic CSI reporting activated by using DCI, the CSI of sub-configuration A and the CSI of sub-configuration B are not permitted to be reported, nor are the CSI of sub-configuration A and the CSI of sub-configuration C both permitted to be reported. Specifically, if a terminal device receives one DCI and the CSI request field within the DCI triggers reporting for these sub-configurations, the terminal device considers the DCI to be a false alarm. Specifically, when a terminal device reports CSIs for sub-configurations, the antenna ports enabled in the reported sub-configurations are not scheduled to overlap. For example, when a terminal device reports CSIs for two sub-configurations, the antenna ports enabled in one sub-configuration are not scheduled to overlap with the antenna ports enabled in the other sub-configuration. When CSIs for multiple sub-configurations are reported, the sub-configurations cannot overlap.

[0163] The aforementioned solution may be implemented as follows: After detecting a duplicate situation, the base station specifies to the terminal device sub-configuration information corresponding to CSIs that are not permitted to be reported by the terminal device. For example, the base station sends second information to the terminal device instructing the terminal device not to report / measure the antenna ports in the first and second sub-configuration information, where the antenna ports corresponding to the first and second sub-configuration information are duplicates.

[0164] Alternatively, the protocol may specify, or the terminal device may pre-configure, that after detecting a duplicate, the terminal device will not proactively report the CSI corresponding to the sub-configuration information due to the duplicate.

[0165] In possible solutions, time-division measurement is performed and then the CSI is reported when CSI reporting for sub-configuration A and sub-configuration B should be permitted. Figure 4 shows the reporting of CSI in a time-division manner according to an embodiment of the present application. As shown in Figure 4, with respect to periodic CSI-RS, one CSI-RS occasion is associated with sub-configuration A, and the other CSI-RS occasion is associated with sub-configuration B. In this way, the base station can transmit CSI-RS in a time-division manner through different precodings. The specific association relationships between CSI-RS occasions and sub-configurations may be specified by the base station. For example, occasions in even slots are associated with sub-configuration A, and occasions in odd slots are associated with sub-configuration B. Alternatively, the association relationships may be predefined. This is equivalent to one sub-configuration corresponding to only one CSI-RS resource.

[0166] The aforementioned solution may be implemented as follows: After detecting the overlapping situation, the base station instructs the terminal device to measure the CSI corresponding to the overlapping ports in different time units. For example, the base station transmits first information to the terminal device instructing the terminal device to measure the reference signal in the port sequence indicated by first sub-configuration information in the first time unit, and to measure the reference signal in the port sequence indicated by second sub-configuration information in the second time unit. The first and second time units are different time units, and the antenna ports corresponding to the first and second sub-configuration information overlap.

[0167] Alternatively, after detecting a conflict, the terminal device may report the CSI corresponding to the conflicting port in different time units, either as specified by the protocol or pre-configured by the terminal device.

[0168] In particular, the sub-configuration information in the embodiment of Figure 2 can implicitly include network energy saving configuration information, meaning that the base station does not need to directly transmit network energy saving configuration information to the terminal device. In this case, if the base station detects that the antenna ports indicated by the network energy saving configuration information are duplicated, it may transmit instruction information to the terminal device. Alternatively, if the terminal device detects that the same antenna port exists in different sub-configuration information corresponding to the same CSI resource, it determines that there is a duplication in the network energy saving configuration information corresponding to the different sub-configuration information.

[0169] In the embodiments of this application, it is assumed that the antenna ports indicated by the sub-configuration information overlap, i.e., the ports enabled in the base station's energy-saving configuration overlap, and as a result, the base station can transmit CSI-RS through different precodings, and terminal devices can perform measurements to acquire CSIs and then report the CSIs to the base station. In this way, the base station can conserve energy when scheduling PDSCHs.

[0170] The above describes in detail the aspects of the communication method of this application with reference to Figures 1 to 4. Hereinafter, the aspects of the communication device of this application will be described in detail with reference to Figures 5 and 6. The description of the device embodiment corresponds to the description of the method embodiment, and therefore, it should be understood that for parts not described in detail, please refer to the method embodiment described above.

[0171] Figure 5 is a block diagram of a communication device 1000 according to an embodiment of the present application. As shown in Figure 5, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 is capable of communicating with the outside world, and the processing unit 1020 is configured to process data. The transceiver unit 1010 may also be called a communication interface or transceiver unit.

[0172] In possible designs, the device 1000 can perform corresponding steps or procedures performed by the terminal device in embodiments of the method described above. The processing unit 1020 is configured to perform processing-related operations of the terminal device in embodiments of the method described above. The transceiver unit 1010 is configured to perform receiving / transmitting-related operations of the terminal device in embodiments of the method described above.

[0173] In another possible design, the device 1000 can perform corresponding steps or procedures performed by a network device (e.g., a base station) in the embodiments of the method described above. The transceiver unit 1010 is configured to perform the base station's receive / transmit related operations in the embodiments of the method described above, and the processing unit 1020 is configured to perform the base station's processing related operations in the embodiments of the method described above.

[0174] It should be understood that device 1000 in this invention is implemented in the form of a functional unit. The term “unit” in this invention may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor configured to run one or more software or firmware programs (e.g., a shared processor, a dedicated processor, or a group processor), memory, a merged logic circuit, and / or another suitable component that supports the function described. In an optional example, a person skilled in the art will understand that device 1000 may specifically be the transmitting end in the embodiments described above and configured to perform the procedures and / or steps corresponding to the transmitting end in the embodiments of the methods described above; or that device 1000 may specifically be the receiving end in the embodiments described above and configured to perform the procedures and / or steps corresponding to the receiving end in the embodiments of the methods described above. Details are not described again here to avoid repetition.

[0175] The device 1000 in the above solution has the function of performing the corresponding steps performed by the transmitting end in the above method. Alternatively, the device 1000 in the above solution has the function of implementing the corresponding steps performed by the receiving end in the above method. The function may be performed by hardware or by hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the above function. For example, the transceiver unit may be replaced by a transceiver machine (for example, the transmitting unit in the transceiver unit may be replaced by a transmitter machine, and the receiving unit in the transceiver unit may be replaced by a receiver machine), and another unit, for example, a processing unit, may be replaced by a processor to separately perform the receive / transmit operations and associated processing operations in the embodiment of the method.

[0176] Furthermore, the transceiver unit may alternatively be a transceiver circuit (for example, including a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit. In this embodiment of the present application, the device in Figure 5 may be the receiving end or the transmitting end in the embodiments described above, or it may be a chip or a chip system, such as a system-on-a-chip (SoC). The transceiver unit may be an input / output circuit or a communication interface. The processing unit is a processor, a microprocessor, or an integrated circuit on a chip, but is not limited to this.

[0177] Figure 6 is a block diagram of a communication device 2000 according to an embodiment of the present application. As shown in Figure 6, the device 2000 includes a processor 2010 and a transceiver 2020. The processor 2010 and the transceiver 2020 communicate with each other via an internal connection path. The processor 2010 is configured to execute instructions and control the transceiver 2020 to transmit and / or receive signals.

[0178] Optionally, the device 2000 may further include memory 2030. Memory 2030, processor 2010, and transceiver 2020 communicate with each other via an internal connection path. Memory 2030 is configured to store instructions, and processor 2010 is capable of executing instructions stored in memory 2030.

[0179] In possible implementations, the device 2000 is configured to perform the procedures and steps corresponding to the terminal device in the embodiment of the method described above.

[0180] In another possible implementation, the device 2000 is configured to perform the procedures and steps corresponding to the network device (e.g., base station) in the embodiment of the method described above.

[0181] It should be understood that device 2000 may specifically be the transmitting or receiving end in the embodiments described above, or, or, a chip or chip system. Correspondingly, transceiver 2020 may be a chip transceiver circuit, but is not limited to this. Specifically, device 2000 may be configured to perform the steps and / or procedures corresponding to the transmitting or receiving end in the embodiments of the method described above.

[0182] Optionally, memory 2030 may include read-only memory and random-access memory and be capable of providing instructions and data to the processor. Some memory may further include non-volatile random-access memory. For example, memory may further store device type information. The processor 2010 may be configured to execute instructions stored in memory. When the processor 2010 executes instructions stored in memory, the processor 2010 is configured to perform the steps and / or procedures in the embodiments of the method described above, corresponding to the transmitting or receiving end.

[0183] In the implementation process, the steps in the aforementioned method can be completed by using hardware integrated logic circuits within the processor or by using instructions in software form. The steps in the method disclosed with reference to embodiments of this application may be performed and completed directly by a hardware processor, or by using a combination of hardware and software modules within the processor. The software modules may be located in storage media that are mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium is located in memory, and the processor reads the information in memory and, in combination with the processor hardware, completes the steps in the aforementioned method. To avoid repetition, further details are not described here.

[0184] It should be noted that the processor in the embodiments of this application may be an integrated circuit chip and has signal processing capabilities. In the implementation process, the steps in the embodiments of the method described above can be completed by using hardware integrated logic circuits within the processor or by using instructions in the form of software. The processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or another programmable logic device, discrete gate, or transistor logic device, or discrete hardware component. The processor in the embodiments of this application can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps in the methods disclosed with reference to the embodiments of this application may be performed and completed directly by a hardware decoding processor, or they may be performed and completed by using a combination of hardware and software modules within the decoding processor. The software module may be placed in a storage medium that is mature in the art, such as random-access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium is placed in memory, and the processor reads the information in memory and, in combination with the processor hardware, completes the steps in the method described above.

[0185] It will be understood that the memory in the embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. Many forms of RAM may be used, not as an example but as an example, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchlink dynamic random access memory (synchlink DRAM, SLDRAM), and direct rambus dynamic random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable type of memory.

[0186] Figure 7 is a block diagram of the chip system 3000 according to an embodiment of the present application. As shown in Figure 7, the chip system 3000 (sometimes referred to as the processing system) includes a logic circuit 3010 and an input / output interface 3020.

[0187] The logic circuit 3010 may be a processing circuit within the chip system 3000. The logic circuit 3010 may be coupled to and connected to a memory unit and may call instructions within the memory unit, enabling the chip system 3000 to implement the methods and functions of the embodiments of this application. The input / output interface 3020 may be an input / output circuit within the chip system 3000, which outputs information to be processed by the chip system 3000 or inputs data or signaling information to be processed into the chip system 3000 for processing.

[0188] In the solution, the chip system 3000 is configured to perform the operations performed by the terminal device in the embodiments of the method described above.

[0189] For example, the logic circuit 3010 is configured to perform processing-related operations performed by the terminal device in the embodiments of the method described above, for example, processing-related operations performed by the terminal device in the embodiments shown in Figures 2 and 3. The input / output interface 3020 is configured to perform transmission and / or reception-related operations performed by the terminal device in the embodiments of the method described above, for example, transmission and / or reception-related operations performed by the terminal device in the embodiments shown in Figures 2 and 3.

[0190] In another example, the logic circuit 3010 is configured to perform processing-related operations performed by a network device in the embodiments of the method described above, for example, processing-related operations performed by a base station in the embodiments shown in Figures 2 and 3. The input / output interface 3020 is configured to perform transmission and / or reception-related operations performed by a network device in the embodiments of the method described above, for example, transmission and / or reception-related operations performed by a base station in the embodiments shown in Figures 2 and 3.

[0191] Embodiments of the present application further provide a computer-readable storage medium. The computer-readable storage medium stores computer instructions for carrying out a method performed by a terminal device or base station in embodiments of the above-described method.

[0192] Embodiments of the present application further provide a computer program product including instructions. When the instructions are executed by a computer, the method executed by a terminal device or base station in the embodiments of the method described above is implemented.

[0193] Embodiments of this application further provide a communication system, which includes terminal devices and base stations in the embodiments described above.

[0194] For a description of the relevant aspects and beneficial effects of any of the devices provided above, please refer to the corresponding embodiments of the methods provided above. Further details are not provided here.

[0195] Those skilled in the art will notice, in combination with the examples described in the embodiments disclosed herein, that units and algorithmic steps may be implemented by electronic hardware or by a combination of computer software and electronic hardware. Whether the function is performed by hardware or by software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementations should not be considered to extend beyond the scope of this application.

[0196] For the sake of convenient and concise explanation, it will be readily apparent to those skilled in the art that detailed operating processes of the aforementioned systems, devices, and units should be referred to in the corresponding processes in the embodiments of the methods described above. Further details are not provided here.

[0197] In the various embodiments provided in this application, it should be understood that the disclosed systems, apparatus, and methods may be implemented in other ways. For example, the embodiments of the apparatus described are merely examples. For example, the division of units is merely a logical functional division and may be other in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. Furthermore, the mutual coupling, direct coupling, or communication connection shown or described may be implemented by using some interfaces. Indirect coupling or communication connection between apparatus or units may be implemented electronically, mechanically, or in other forms.

[0198] Units described as separate parts may or may not be physically separate, and parts shown as units may or may not be physical units, may be located in one place, or may be distributed across multiple network units. Some or all of the units can be selected based on the actual requirements in order to achieve the objectives of the solution of the embodiment.

[0199] Furthermore, the functional units in the embodiments of this application may be integrated into a single processing unit, and each unit may exist physically independently, or two or more units may be integrated into a single unit.

[0200] When a function is implemented in the form of a software function unit and sold or used as an independent product, the function may be stored on a computer-readable storage medium. Based on such understanding, the technical solution of the present application, in essence, may be implemented in the form of a software product, either in a portion of the prior art or in part of the technical solution. A computer software product is stored on a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, server, network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes any medium capable of storing program code, such as a USB flash drive, removable hard disk drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0201] The foregoing description merely represents a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any modifications or substitutions readily conceived by a person skilled in the art within the technical scope disclosed in the present application shall fall within the scope of protection of the present application. Accordingly, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. It is a method of communication: Steps include: transmitting channel status information CSI report configuration information to a terminal device, wherein the CSI report configuration information corresponds to M CSI resources, the CSI report configuration information includes N sub-configuration information, each of the N sub-configuration information corresponds to M CSI resources, each of the sub-configuration information indicates at least one rank and at least one port sequence, each of the at least one port sequence includes at least one antenna port, each of the at least one rank is associated with one of the at least one port sequences, where M is a positive integer and N is an integer greater than 1; and The step of transmitting a reference signal to the M CSI resources; A method that includes this.

2. The method according to claim 1, wherein the antenna port included in the port sequence is an antenna port that is enabled when a physical downlink shared channel is transmitted to the terminal device.

3. A method according to claim 1 or 2, wherein the sub-configuration information further includes network energy saving configuration information, the network energy saving configuration information specifying a CSI-RS antenna port used for CSI measurement.

4. A method according to any one of claims 1 to 3, wherein the sub-configuration information includes the at least one rank and the at least one port sequence.

5. In the method according to claim 3, the sub-configuration information further includes the number m of CSI-RS antenna ports used for CSI measurement, wherein the number of CSI-RS antenna ports used for CSI measurement is p 0 ,p 1 ,p 2 ,...,p m-1 The value of each of the at least one ranks is an integer from 1 to m; the port sequence associated with a rank whose value is v is the port sequence {p 0 ,p 1 ,p 2 ,...,p m-1 The method includes the first v antenna ports in ascending order within the}, where v is a positive integer less than or equal to m.

6. A method according to any one of claims 1 to 5, wherein the rank value represents the number of antenna ports in the port sequence associated with the rank.

7. In the method according to any one of claims 1 to 6, The N sub-configuration information includes a first sub-configuration information and a second sub-configuration information, and the port sequence specified by the first sub-configuration information and the port sequence specified by the second sub-configuration information include at least one identical antenna port; The method further includes the step of transmitting first information to the terminal device, wherein the first information instructs the terminal device to measure a reference signal in a first time unit in a port sequence specified by the first sub-configuration information, and to measure a reference signal in a second time unit in a port sequence specified by the second sub-configuration information, the first time unit and the second time unit being different time units.

8. A method according to claim 7, wherein the time unit includes a slot.

9. It is a method of communication: Steps include receiving channel status information CSI report configuration information from a base station, wherein the CSI report configuration information corresponds to M CSI resources, the CSI report configuration information includes N sub-configuration information, each of the N sub-configuration information corresponds to M CSI resources, each of the sub-configuration information indicates at least one rank and at least one port sequence, each of the at least one port sequence includes at least one antenna port, and each of the at least one rank is associated with one of the at least one port sequences, where M is a positive integer and N is an integer greater than 1; and The step of receiving a reference signal in the M CSI resources; A method that includes this.

10. The method according to claim 9, wherein the sub-configuration information further includes network energy saving configuration information, the network energy saving configuration information specifying a CSI-RS antenna port used for CSI measurement.

11. A method according to claim 9 or 10, wherein the sub-configuration information includes the at least one rank and the at least one port sequence.

12. In the method of claim 10, the sub configuration information further includes a quantity m of CSI-RS antenna ports used for CSI measurement, the CSI-RS antenna ports used for CSI measurement are p 0 ,p 1 ,p 2 ,...,p m-1 , m is a positive integer, and the value of each of said at least one rank is an integer from 1 to m; the port sequence associated with a rank having a value v includes the first v antenna ports in ascending order from the port sequence {p 0 ,p 1 ,p 2 ,...,p m-1}, where v is a positive integer less than or equal to m.

13. A method according to any one of claims 9 to 12, wherein the rank value represents the number of antenna ports in the port sequence associated with the rank.

14. In the method according to any one of claims 9 to 13, The N sub-configuration information includes a first sub-configuration information and a second sub-configuration information, and the port sequence specified by the first sub-configuration information and the port sequence specified by the second sub-configuration information include at least one identical antenna port; The method further comprises the steps of: measuring a reference signal in a first time unit in a port sequence specified by the first sub-configuration information, and measuring a reference signal in a second time unit in a port sequence specified by the second sub-configuration information, wherein the first time unit and the second time unit are different time units; A method that includes this.

15. A method according to claim 14, wherein the time unit includes a slot.

16. It is a method of communication: Steps include: transmitting channel status information CSI report setting information to a terminal device, wherein the CSI report setting information corresponds to M CSI resources, the CSI report setting information includes M port instruction information and N sub-setting information, the port instruction information is in a one-to-one correspondence with a CSI resource, each of the sub-setting information corresponds to M CSI resources, the port instruction information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port used for channel measurement, each sequence identifier indicates one port sequence, the sub-setting information indicates at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1; and The step of transmitting a reference signal to the M CSI resources by using at least one first port sequence; A method that includes this.

17. The method according to claim 16, wherein the second antenna port is an antenna port that is enabled when a physical downlink shared channel is transmitted to the terminal device.

18. In the method according to claim 16 or 17, the port instruction information is: A method comprising the at least one sequence identifier and the at least one port sequence.

19. A method according to any one of claims 16 to 18, wherein the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

20. In the method according to any one of claims 16 to 19, The N sub-configuration information includes a first sub-configuration information and a second sub-configuration information, wherein at least one second antenna port specified by the first sub-configuration information and at least one second antenna port specified by the second sub-configuration information include at least one identical antenna port; The method further includes: transmitting first information to the terminal device, the first information instructing the terminal device to measure the reference signal of the at least one second antenna port specified by the first sub-configuration information in a first time unit, and to measure the reference signal of the at least one second antenna port specified by the second sub-configuration information in a second time unit, wherein the first time unit and the second time unit are not the same time unit.

21. A method according to claim 20, wherein the time unit includes a slot.

22. It is a method of communication: Steps include receiving channel status information CSI report setting information from a base station, wherein the CSI report setting information corresponds to M CSI resources, the CSI report setting information includes M port instruction information and N sub-setting information, the port instruction information is in a one-to-one correspondence with CSI resources, each of the sub-setting information corresponds to M CSI resources, the port instruction information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port used for channel measurement, each sequence identifier indicates one port sequence, the sub-setting information indicates at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1; and A step of measuring a reference signal in at least one first port sequence in the M CSI resources, wherein the first port sequence belongs to a port sequence specified by the port designation information, and the antenna ports in the first port sequence are the second antenna ports; A method that includes this.

23. The method according to claim 22, wherein the second antenna port is an antenna port that is enabled when the base station transmits a physical downlink shared channel.

24. In the method according to claim 22 or 23, the port instruction information is: A method comprising the at least one sequence identifier and the at least one port sequence.

25. A method according to any one of claims 22 to 24, wherein the sequence identifier includes a rank, and the value of the rank represents the number of antenna ports in the port sequence specified by the rank.

26. In the method according to any one of claims 22 to 25, The N sub-configuration information includes a first sub-configuration information and a second sub-configuration information, wherein at least one second antenna port specified by the first sub-configuration information and at least one second antenna port specified by the second sub-configuration information include at least one identical antenna port; The method further comprises the steps of: measuring the reference signal of the at least one second antenna port specified by the first sub-configuration information in a first time unit; and measuring the reference signal of the at least one second antenna port specified by the second sub-configuration information in a second time unit, wherein the second time unit is different from the first time unit; A method that includes this.

27. A method according to claim 26, wherein the time unit includes a slot.

28. A communication device comprising a module or unit configured to perform the method described in any one of claims 1 to 8, any one of claims 9 to 15, any one of claims 16 to 21, or any one of claims 22 to 27.

29. A communication device including a processor, wherein the processor is coupled to a memory, the memory stores instructions, and when an instruction is executed by the processor, the communication device becomes capable of performing the method according to any one of claims 1 to 8, any one of claims 9 to 15, any one of claims 16 to 21, or any one of claims 22 to 27.

30. A communication system including terminal devices and base stations, The base station is configured to perform the method described in any one of claims 1 to 8, and the terminal device is configured to perform the method described in any one of claims 9 to 15, or A communication system in which the base station is configured to perform the method described in any one of claims 16 to 21, and the terminal device is configured to perform the method described in any one of claims 22 to 27.

31. A computer-readable storage medium containing a computer program, wherein when the computer program is executed on the computer, the computer is able to perform the method according to any one of claims 1 to 8, any one of claims 9 to 15, any one of claims 16 to 21, or any one of claims 22 to 27.

32. A chip including a processor, wherein when a computer program is called from memory and the computer program is executed, a communication device on which the chip is mounted is capable of performing the method according to any one of claims 1 to 8, any one of claims 9 to 15, any one of claims 16 to 21, or any one of claims 22 to 27.

33. A computer program product wherein, when the computer program product is executed by a communication device, the method described in any one of claims 1 to 8, any one of claims 9 to 15, any one of claims 16 to 21, or any one of claims 22 to 27 is executed.

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